CN101752604B - Battery pack - Google Patents

Battery pack Download PDF

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Publication number
CN101752604B
CN101752604B CN2009102580405A CN200910258040A CN101752604B CN 101752604 B CN101752604 B CN 101752604B CN 2009102580405 A CN2009102580405 A CN 2009102580405A CN 200910258040 A CN200910258040 A CN 200910258040A CN 101752604 B CN101752604 B CN 101752604B
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CN
China
Prior art keywords
pseudo
basic
circuit board
battery pack
holddown groove
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2009102580405A
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Chinese (zh)
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CN101752604A (en
Inventor
郭鲁显
张营喆
徐镜源
河载暎
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Samsung SDI Co Ltd
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Samsung SDI Co Ltd
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Publication of CN101752604A publication Critical patent/CN101752604A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0436—Small-sized flat cells or batteries for portable equipment
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/058—Construction or manufacture
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M10/4257—Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
    • H01M50/102—Primary casings, jackets or wrappings of a single cell or a single battery characterised by their shape or physical structure
    • H01M50/103—Primary casings, jackets or wrappings of a single cell or a single battery characterised by their shape or physical structure prismatic or rectangular
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
    • H01M50/147—Lids or covers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
    • H01M50/147—Lids or covers
    • H01M50/148—Lids or covers characterised by their shape
    • H01M50/15—Lids or covers characterised by their shape for prismatic or rectangular cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/528—Fixed electrical connections, i.e. not intended for disconnection
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Abstract

A battery pack includes a bare cell including a cap plate and an electrode terminal insulated from the cap plate and a circuit module including a circuit board having a first short side, a second short side generally opposite the first short side, a first long side and a second long side generally opposite the first long side. The circuit board includes a base lead plate attached to the circuit board and a base fixing protrusion extending from the base lead plate, wherein the circuit module is on and electrically connected to the bare cell. The battery pack also includes an upper cover covering the circuit module, the upper cover including a base fixing groove adapted to receive the base fixing protrusion, wherein base fixing protrusion is in the base fixing groove.

Description

Battery pack
Technical field
The present invention relates to a kind of battery pack.
Background technology
Lithium secondary battery can be the form of battery pack.This battery pack typically comprises: plain battery, the cap assemblies that it comprises electrode assemblie, holds the tank of this electrode assemblie and be suitable for covering the upper shed of this tank; Circuit module, it comprises that this circuit module is coupled to the top of described plain battery such as the circuit devcie of charge/discharge device and protective circuit device; And upper cover, its top that is coupled to described plain battery is to cover described circuit module.The electrode assemblie of plain battery consists essentially of positive plate, negative plate and dividing plate.
In recent years, construct battery pack with the upper cover of casting with the plain battery that is connected to this upper cover, to obtain relatively thin battery pack.
Yet, in this battery pack, between upper cover and plain battery, usually do not provide support member and support upper cover opposing external impact.When strong external impact was applied on the battery pack, upper cover may bend or twist, thereby caused upper cover to be separated with plain battery.
Summary of the invention
Each side of the present invention provides a kind of battery pack, wherein be formed on the joining circuit module of plain battery in fixed projection be coupled to regularly in the corresponding holddown groove that is formed in the upper cover, preventing upper cover crooked or distortion because of external impact, thereby can prevent effectively that upper cover from separating with plain battery.
A kind of battery pack comprises: plain battery, and it comprises cover plate and the electrode terminal that insulate with described cover plate; With the circuit module that comprises circuit board, this circuit board have the first short side, with the described first short side roughly relative the second short side, the first long side and with the described first long side relative the second long side roughly.This circuit board comprises basis (base) corbel back slab that is attached on this circuit board and the basic fixed projection that extends from this basis corbel back slab, and wherein this circuit module is positioned on the described plain battery and is electrically connected to this plain battery.This battery pack also comprises the upper cover that covers described circuit module, and this upper cover comprises the basic holddown groove that is suitable for admitting described basic fixed projection, wherein should be arranged in described basic holddown groove by the basis fixed projection.In one embodiment, described circuit board is flexible printed circuit board.
In one embodiment, described circuit module further comprises puppet (dummy) corbel back slab that is coupled to described circuit board, and this puppet corbel back slab has towards the outstanding pseudo-fixed projection of described upper cover; Wherein said upper cover further comprises the pseudo-holddown groove that is suitable for admitting described pseudo-fixed projection, and wherein said pseudo-fixed projection is arranged in described pseudo-holddown groove.Further, described basic corbel back slab can be connected to the first side of described cover plate, and described pseudo-corbel back slab can be connected to the second side of described cover plate.
In one embodiment, described basic corbel back slab further comprises basic bonding part, the foundation bottom that is connected to described cover plate and basis connection (connecting) part that described basis is engaged (coupling) part and the foundation bottom of being connected and be connected of described the first short side that is coupled to described circuit board; Be positioned at the edge of described foundation bottom with wherein said basic fixed projection.Further, described pseudo-corbel back slab can further comprise described the second short side that is coupled to described circuit board pseudo-bonding part, be connected to the pseudo-bottom of described cover plate and the pseudo-coupling part that described pseudo-bonding part is connected with described pseudo-bottom; Be positioned at the edge of described pseudo-bottom with wherein said pseudo-fixed projection.
In embodiments of the present invention, basic fixed projection and pseudo-fixed projection can be positioned at the diverse location place on the basic corbel back slab, comprise along approaching and corresponding to the edge of short side or the long side of described circuit board.In addition, can have respectively a plurality of basic holddown grooves and corresponding basic fixed projection and a plurality of pseudo-holddown groove and corresponding pseudo-fixed projection at the diverse location place of soleplate and pseudo-plate.
Description of drawings
According to below in conjunction with the description of accompanying drawing to embodiment, these and/or other side of the present invention and advantage will become obviously and easy to understand, wherein:
Fig. 1 a and Fig. 1 b are respectively assembling and the decomposition diagram according to the battery pack of the embodiment of the invention.
Fig. 2 is the decomposition diagram of the circuit module shown in Fig. 1 b.
Fig. 3 is connected in the plain battery of Fig. 1 b together and the perspective view of circuit module.
Fig. 4 is the perspective view of the upper cover shown in Fig. 1 b.
Fig. 5 is the partial, exploded perspective view of the plain battery shown in Fig. 1 b and circuit module.
Fig. 6 is the decomposition diagram of battery pack according to another embodiment of the present invention.
Fig. 7 a is the perspective view of the plain battery shown in the Fig. 6 that is connected in together and circuit module.
Fig. 7 b is the perspective view of the plain battery shown in the Fig. 6 that is coupled to according to another embodiment of the present invention circuit module.
Fig. 8 is the perspective view of the upper cover shown in Fig. 6.
Fig. 9 is the partial, exploded perspective view of the plain battery shown in Fig. 6 and circuit module.
Figure 10 is the decomposition diagram of battery pack according to another embodiment of the present invention.
Figure 11 is the perspective view of the plain battery shown in the Figure 10 that is connected in together and circuit module.
Figure 12 is the perspective view of the upper cover shown in Figure 10.
Figure 13 is the partial, exploded perspective view of the plain battery shown in Figure 10 and circuit module.
Embodiment
Now in detail referring to the present embodiment of the present invention, the example illustration of these embodiment in the accompanying drawings, wherein in full in identical Reference numeral represent identical element.The embodiment that is described below by the reference accompanying drawing is devoted to explain the present invention.
Fig. 1 a and Fig. 1 b are respectively assembling and the decomposition diagram according to the battery pack of the embodiment of the invention; Fig. 2 is the decomposition diagram of the circuit module shown in Fig. 1 b; Fig. 3 is connected in the plain battery of Fig. 1 b together and the perspective view of circuit module; Fig. 4 is the perspective view of the upper cover shown in Fig. 1 b; And Fig. 5 is the partial, exploded perspective view of the plain battery shown in Fig. 1 b and circuit module.
Referring to Fig. 1 a and Fig. 1 b, battery pack 10 can comprise plain battery 100, circuit module 200, upper cover 320, lower cover 340 and label 400.
Plain battery 100 is electrically connected to circuit module 200 to form core group (core pack).Upper cover 320 and lower cover 340 are assembled into this core group, and then label 400 is attached on this core group, thereby finish the assembling of battery pack 10.
Plain battery 100 provides electric energy.Plain battery 100 comprises electrode assemblie, is made of metal and holds the container type tank 110 of this electrode assemblie and electrolyte and is suitable for the cap assemblies 120 of the opening of closed container 110.Electrode assemblie comprises positive pole, negative pole and places dividing plate between these two electrodes, cap assemblies 120 can comprise metal cover board 121, be projected into the electrode terminal 122 of cover plate 121 tops and place cover plate 121 and electrode terminal 122 between with the liner 123 of electrode terminal 122 with cover plate 121 insulation.
Tank 110 and cover plate 121 self can be used as terminal.In this embodiment of the present invention and the following examples, tank 110 and cover plate 121 are as anodal, and electrode terminal 122 is as negative pole.It should be understood, however, that tank 110, cover plate 121 and electrode terminal 122 can have the polarity opposite with above description.
Shown in Fig. 1 b, plain battery 100 can have following surface: upper surface 100a, and outstanding from this upper surface 100a with the electrode terminal 122 of cover plate 121 insulation by liner 123; All be connected to a pair of short side surface 100b, 100c and a pair of long side surface 100d, the 100e of upper surface 100a and the lower surface 100f relative with upper surface 100a. Short side surface 100b, 100c are narrower than long side surface 100d, 100e.In this embodiment of the present invention and the following examples, the upper surface 100a of plain battery 100 and lower surface 100f are restricted to respect to plain battery 100 respectively facing up and face down.
Referring to Fig. 1 b, Fig. 2 and Fig. 3, circuit module 200 is disposed on the plain battery 100 and with plain battery 100 and is electrically connected.Circuit module 200 comprises circuit board 210, positive temperature coefficient (PTC) device 220, circuit devcie 230, external terminal portions 240, basic corbel back slab 250 and pseudo-corbel back slab 260.
Circuit board 210 has roughly the size corresponding to the upper surface 100a of plain battery 100, and shape is quadrangle substantially.Circuit board 210 can be by the charging and discharging that is used for the control battery with the charge/discharge circuit pattern that charged state maintained constant level be used for preventing that the protective circuit pattern of battery overcharge/overdischarge from forming.
Circuit board 210 can be thin flexible printed circuit board, and can have terminal hole 211 in its position corresponding with the electrode terminal 122 of plain battery 100.Electrode terminal 122 and liner 123 are inserted in the terminal hole 211, so that the lower surface 210b of circuit board 210 can face and the surface of contact cover plate 121, thus so that the compact conformation of battery pack 10.Circuit board 210 has the first short side 212, the second short side 213, the first long side 214 and the second long side 215.
Insulating tape also can be positioned between circuit board 210 and the plain battery 100, so that circuit board 210 and cover plate 121 are insulated.Jointing material also can be applied on two surfaces of insulating tape, circuit board 210 is adhered to the upper surface of cover plate 121.
PTC device 220 can be positioned on the upper surface 210a of circuit board 210.PTC device 220 can comprise the first lug plate 221, PTC main body 222 and the second lug plate 223.The first lug plate 221 is electrically connected to the portion of terminal 216 on the upper surface 210a that is arranged in circuit board 210.PTC main body 222 is positioned on the first lug plate 221 and is electrically connected to the first lug plate 221.PTC main body 222 is such device: the resistance of this device levels off to infinity when the temperature of battery pack 10 surpasses a certain critical value, and this device can be blocked charge/discharge current when battery pack 10 is heated to abnormal high temperature by mistakes.When the temperature of battery pack 10 is lower than this critical value, but PTC main body 222 can restart owing to its inverse operation.Because PTC main body 222 is electrically connected to the electrode terminal 122 of plain battery 100, himself can be as the corbel back slab of negative pole.The second lug plate 223 is positioned on the PTC main body 222, and by be electrically connected to the electrode terminal 122 that stretches out terminal hole 211 such as suitable technology such as laser welding.
Circuit devcie 230 can be installed on the upper surface 210a of circuit board 210.Circuit devcie 230 is electrically connected to charge/discharge circuit pattern or the protective circuit pattern of circuit board 210, with charging and discharging or the cut-out overcurrent of control battery pack 10.
External terminal portions 240 can be installed on the upper surface 210a of circuit board 210, and can separate a distance with circuit devcie 230.External terminal portions 240 is used for circuit board 210 is electrically connected to external electrical device.External terminal portions 240 can comprise the power supply metal terminal 241,242 of the charge/discharge circuit pattern that is electrically connected to circuit board 210; Identification (ID) terminal 243 that is used for the information of verification battery pack 10; With made by insulating material with terminal 241,242 and 243 housing section 244 insulated from each other.
The side that goes up along its length that basis corbel back slab 250 is installed to be circuit board 210 links to each other with a corresponding side that goes up along its length of cover plate 121.Particularly, the first short side 212 that basic corbel back slab 250 is coupled to circuit board 210 to be being electrically connected to the positive interconnect pattern of circuit board 210, and extends to be electrically connected to the upper surface 100a of plain battery 100.Basis corbel back slab 250 is made of metal, for example nickel or nickel alloy.Because the upper surface 100a of plain battery 100 can be as anodal so be connected to the basic corbel back slab 250 of the upper surface 100a of plain battery 100 by forming as anodal cover plate 121.
Referring to Fig. 2 and Fig. 3, basic corbel back slab 250 can comprise basic bonding part 251, foundation bottom 252, basic coupling part 253 and basic fixed projection 254.
Bonding part 251, basis is coupled to the first short side 212 of the upper surface 210a of circuit board 210.Foundation bottom 252 is coupled to the surface of cover plate 121.Coupling part 253, basis is formed and connects basic bonding part 251 and foundation bottom 252.
Basis fixed projection 254 is positioned in an edge of foundation bottom 252, in one embodiment, be positioned in the edge of the first long side 214 of close circuit board, and along outstanding towards the direction of upper cover 320 from plain battery 100, this will elaborate after a while.Basis fixed projection 254 is engaged in the basic holddown groove 325 (Fig. 4) of upper cover 320 regularly, and to support upper cover 320 opposing external impact, this also will elaborate after a while.Because the support of basic fixed projection 254 can prevent upper cover 320 crooked or distortion when external force puts on the battery pack 10 effectively.
The opposite side of going up along its length that pseudo-corbel back slab 260 is installed to be circuit board 210 links to each other with a corresponding side that goes up along its length of cover plate 121.The second short side 213 that pseudo-corbel back slab 260 is coupled to circuit board 210 to be being electrically connected to the positive interconnect pattern of circuit board 210, and extends to be electrically connected to the upper surface 100a of plain battery 100.
Pseudo-corbel back slab 260 can have and basic corbel back slab 250 essentially identical shape and size.In addition, pseudo-corbel back slab 260 can be made by the material identical with basic corbel back slab 250.Pseudo-corbel back slab 260 can comprise pseudo-bonding part 261, pseudo-bottom 262, pseudo-coupling part 263 and pseudo-fixed projection 264.The pseudo-bonding part 261 of pseudo-corbel back slab 260, pseudo-bottom 262, pseudo-coupling part 263 and pseudo-fixed projection 264 correspond essentially to respectively basic bonding part 251, foundation bottom 252, basic coupling part 253 and the basic fixed projection 254 of basic corbel back slab 250, therefore omit its detailed description.
Different from the basic fixed projection 254 of basic corbel back slab 250, the pseudo-fixed projection 264 of pseudo-corbel back slab 260 is formed on the edge of the second long side 215 of the most close circuit board 210 of pseudo-bottom 262, thereby be engaged in regularly in the pseudo-holddown groove 327 (Fig. 4) of upper cover 320, this will elaborate after a while.Basis fixed projection 254 and the pseudo-fixed projection 264 different opposite sides that can support equably upper cover 320 in position.Namely, be formed on the edge of the first long side 214 of the most close circuit board 210 of pseudo-bottom 262 if the basic fixed projection of the pseudo-fixed projection 264 of pseudo-corbel back slab 260 and basic corbel back slab 250 254 is the same, then an only side of upper cover 320 part is supported by pseudo-fixed projection 264 and basic fixed projection 254 concentrated areas.
Referring to Fig. 1 b, Fig. 4 and Fig. 5, upper cover 320 is coupled to the top of plain battery 100, so that circuit module 200 is covered and is contained in the inner space of this upper cover.Upper cover 320 can be made by insulating material.Upper cover 320 can comprise cover plate 321, sidewall 322 and wall extension 323.Upper cover 320 also can comprise therein and is formed the first projection 324 with basic holddown groove 325 and is formed the second projection 326 with pseudo-holddown groove 327.
Cover plate 321 can have the essentially identical shape of upper surface 100a with plain battery 100.The upper surface 210a of the inner surface face circuit board 210 of cover plate 321.Cover plate 321 has the through hole 321a corresponding with the external terminal portions 240 of circuit module 200.External terminal portions 240 is exposed to the outside of battery pack 10 by this through hole 321a, thereby battery pack 10 can be electrically connected to external electrical device.
Sidewall 322 extends towards circuit module 200 from cover plate 321.Wall extension 323 extends towards circuit module 200 corresponding to the long side 100d of plain battery 100 and the part of 100e from sidewall 322.Wall extension 323 is centered on by label 400, and this will be in after a while explaination.
The first projection 324 is extended towards circuit module 200 from a side of the basal surface of cover plate 321.The first projection 324 comprises and is formed the basic holddown groove 325 corresponding with the basic fixed projection 254 of basic corbel back slab 250.Basis fixed projection 254 is engaged in the basic holddown groove 325 regularly at assembly process.
The second projection 326 is extended towards circuit module 200 from the opposite side of the basal surface of cover plate 321.The first projection 326 comprises and being formed in the face of pseudo-fixed projection 264 and the pseudo-holddown groove 327 corresponding with pseudo-fixed projection 264.Pseudo-fixed projection 264 is engaged in the pseudo-holddown groove 327 regularly at assembly process.
Lower cover 340 is coupled to the bottom of plain battery 100.Lower cover 340 can comprise base plate 341 and the extension 342 that extends towards plain battery 100 from base plate 341.
Base plate 341 has the essentially identical shape of lower surface 100f with plain battery 100, and is attached to the lower surface 100f of plain battery 100 by adhesive member 345.
Extension 342 covers the long side 100d of plain battery 100, the bottom of 100e.Extension 342 is centered on by label 400, and this will be in after a while explaination.
Label 400 is attached to side surface 100b, 100c, 100d, the 100e around plain battery 100.Label 400 covers the wall extension 323 of upper cover 320 and the extension 342 of lower cover 340.
As mentioned above, in the battery pack 10 according to the embodiment of the invention, the basic fixed projection 254 of basis corbel back slab 250 and the pseudo-fixed projection 264 of pseudo-corbel back slab 260 are engaged in respectively in the basic holddown groove 325 and pseudo-holddown groove 327 that is formed in the upper cover 320 regularly, to support upper cover 320 opposing external impact.Adopt this configuration, when strong external impact is applied on the battery pack 10, can effectively prevent upper cover 320 crooked or distortions.Therefore, can prevent effectively that upper cover 320 from separating with plain battery 100.
In addition, the basic fixed projection 254 of basis corbel back slab 250 is engaged in regularly near first of circuit board 210 to be grown in the basic holddown groove 325 of side 214, the pseudo-fixed projection 264 of pseudo-corbel back slab 260 is engaged in regularly near second of circuit board 210 to be grown in the pseudo-holddown groove 327 of side 215, to support equably upper cover 320 opposing external impact.Therefore, can effectively prevent impact bending or the distortion that upper cover 320 is applied by strong outside.Should be appreciated that holddown groove 325,327 and fixed projection 254,264 position can with position opposite recited above, thereby have essentially identical effect.
Next, battery pack 20 according to another embodiment of the present invention is described.
Fig. 6 is the decomposition diagram of battery pack according to another embodiment of the present invention; Fig. 7 a is the perspective view of the plain battery shown in the Fig. 6 that is connected in together and circuit module; Fig. 7 b is the perspective view that is connected to the plain battery shown in Fig. 6 of another circuit module; Fig. 8 is the perspective view of the upper cover shown in Fig. 6; Fig. 9 is the partial, exploded perspective view of the plain battery shown in Fig. 6 and circuit module.
Except quantity, shape and the position of basic fixed projection 554, pseudo-fixed projection 564, basic holddown groove 625 and pseudo-holddown groove 627, the structure of battery pack 20 is equal to the structure of battery pack 10 substantially.Identical Reference numeral is used to represent the element that has same structure with the element of last embodiment.In this is described, omit the explaination that repeats of similar elements, and will mainly provide different elements 554,564,625 and 627 explaination.
Referring to Fig. 6 to Fig. 9, battery pack 20 can comprise plain battery 100, circuit module 500, upper cover 620, lower cover 340 and label 400.
Referring to Fig. 6 to Fig. 7 a, circuit module 500 is disposed in the top of plain battery 100, and is electrically connected to plain battery 100.Circuit module 500 can comprise circuit board 210, PTC device 220, circuit devcie 230, external terminal portions 240, basic corbel back slab 550 and pseudo-corbel back slab 560.
The side that goes up along its length that basis corbel back slab 550 is installed to be circuit board 210 links to each other with a corresponding side that goes up along its length of cover plate 121.Basis corbel back slab 550 can comprise basic bonding part 251, foundation bottom 252, basic coupling part 253 and basic fixed projection 554.
Basis fixed projection 554 is positioned in the edge of foundation bottom 252, and along outstanding towards the direction of upper cover 620 from plain battery 100, this will elaborate after a while.Basis fixed projection 554 can comprise first foundation projection 554a and the second basic projection 554b.First foundation projection 554a can be formed on the edge of the first long side 214 of the most close circuit board 210 of foundation bottom 252, and the second basic projection 554b can be formed on the edge of the first short side 212 that is basically parallel to circuit board 210 of foundation bottom 252.First foundation projection 554a and the second basic projection 554b are engaged in respectively among the first foundation holddown groove 625a and the second basic holddown groove 625b of upper cover 620 regularly, to support upper cover 620 opposing external impact.Adopt this configuration, basic fixed projection 554 can prevent effectively that upper cover 620 is because being applied to strong external impact on the battery pack 20 along the crooked or distortion of x axle and y direction of principal axis (among Fig. 7 a shown in the arrow).
The opposite side of going up along its length that pseudo-corbel back slab 560 is installed to be circuit board 210 links to each other with a corresponding side that goes up along its length of cover plate 121.Pseudo-corbel back slab 560 can comprise pseudo-bonding part 261, pseudo-bottom 262, pseudo-coupling part 263 and pseudo-fixed projection 564.
Pseudo-fixed projection 564 is positioned in the edge of pseudo-bottom 262, and along outstanding towards the direction of upper cover 620 from plain battery 100, this will set forth after a while.Pseudo-fixed projection 564 can comprise the first pseudopods 564a and the second pseudopods 564b.The first pseudopods 564a can be formed on the edge of the first long side 214 of the most close circuit board 210 of pseudo-bottom 262, and the second pseudopods 564b can be formed on the edge of the second short side 213 that is parallel to circuit board 210 of pseudo-bottom 262.The first and second pseudopods 564a, 564b are engaged in respectively among the first and second pseudo-holddown groove 627a, the 627b of upper cover 620 regularly, to support upper cover 620 opposing external impact.Adopt this configuration, pseudo-fixed projection 564 can prevent effectively that upper cover 620 is because being applied to strong the external impact crooked or distortion along x axle and y direction of principal axis on the battery pack 20.
Referring to Fig. 7 b, to compare with comprising the circuit module 500 that is formed the pseudo-corbel back slab 560 with pseudo-fixed projection 564, circuit module 500 ' is provided as supporting more equably upper cover 620 along x axle and y direction of principal axis.Particularly, the pseudo-corbel back slab 560 ' of circuit module 500 ' comprises pseudo-fixed projection 564 ', and this puppet fixed projection 564 ' comprises the first pseudopods 564a ' of edge of the second long side 215 of the most close circuit board 210 that is positioned at pseudo-bottom 262 and the second pseudopods 564b ' of edge that is positioned at the second short side 213 that is basically parallel to circuit board 210 of pseudo-bottom 262.
Referring to Fig. 6, Fig. 8 and Fig. 9, upper cover 620 is coupled to the top of plain battery 100, so that circuit module 500 is covered and is contained in the inner space of this upper cover 620.Upper cover 620 can be made by insulating material.Upper cover 620 can comprise cover plate 321, sidewall 322 and wall extension 323.Upper cover 620 also can comprise therein and is formed the first projection 324 with basic holddown groove 625 and is formed the second projection 326 with pseudo-holddown groove 627.
The first projection 324 comprises basic holddown groove 625, and this basis holddown groove 625 is formed corresponding to the basic fixed projection 554 of basic corbel back slab 550 and is suitable for cooperating regularly with the basic fixed projection 554 of basic corbel back slab 550.Particularly, basic holddown groove 625 that comprise the first foundation holddown groove 625a in the zone corresponding with the first fixed projection 554a that is arranged in upper cover 620 and be arranged in upper cover 620 with the second basic holddown groove 625b zone corresponding to the second fixed projection 554b.
The second projection 326 comprises pseudo-holddown groove 627, this puppet holddown groove 627 be formed on the second projection 326 corresponding in the pseudo-fixed projection 564 of basic corbel back slab 550 and the zone that is suitable for cooperating regularly with the pseudo-fixed projection 564 of basic corbel back slab 550.Particularly, pseudo-holddown groove 627 that can comprise the first pseudo-holddown groove 627a in the zone corresponding with the first pseudopods 564a that is arranged in upper cover 620 and be arranged in upper cover 620 with the second pseudo-holddown groove 627b zone corresponding to the second pseudopods 564b.
As mentioned above, in the battery pack 20 according to the embodiment of the invention, the first and second basic projection 554a, 554b are coupled to respectively among the first and second basic holddown groove 625a, the 625b regularly, the first and second pseudopods 564a, 564b are coupled to respectively among the first and second pseudo-holddown groove 627a, the 627b regularly, with stable along x axle and y direction of principal axis and support equably upper cover 620 opposing external impact.Adopt this configuration, the upper cover 620 that can effectively prevent battery pack 20 because of strong external impact along the x axle with the y direction of principal axis is crooked or distortion.Therefore, compare with battery pack 10, can prevent more effectively that upper cover 620 from separating with the plain battery 100 of battery pack 20.
Next, battery pack 30 according to another embodiment of the present invention is described.
Figure 10 is the decomposition diagram of battery pack according to another embodiment of the present invention; Figure 11 is the perspective view of the plain battery shown in the Figure 10 that is connected in together and circuit module; Figure 12 is the perspective view of the upper cover shown in Figure 10; Figure 13 is the partial, exploded perspective view of the plain battery shown in Figure 10 and circuit module.
Except the shape and position of basic fixed projection 754, pseudo-fixed projection 764, basic holddown groove 825 and pseudo-holddown groove 827, the structure of battery pack 30 is equal to the structure of battery pack 20 substantially.Identical Reference numeral is used to represent the element that has same structure with the element of last embodiment.In this is described, omit being repeated in this description of similar elements, and will mainly provide different elements 754,764,825 and 827 explaination.
Referring to Figure 10 to Figure 13, battery pack 30 can comprise plain battery 100, circuit module 700, upper cover 820, lower cover 340 and label 400.
Referring to Figure 10 and Figure 11, circuit module 700 is disposed in the upper of plain battery 100 and is electrically connected to plain battery 100.Circuit module 700 can comprise circuit board 210, PTC device 220, circuit devcie 230, external terminal portions 240, basic corbel back slab 750 and pseudo-corbel back slab 760.
The side that goes up along its length that basis corbel back slab 750 is installed to be circuit board 210 links to each other with a corresponding side that goes up along its length of cover plate 121.Basis corbel back slab 750 can comprise basic bonding part 251, foundation bottom 252, basic coupling part 253 and basic fixed projection 754.
Basis fixed projection 754 is positioned in the edge of foundation bottom 252, and along outstanding towards the direction of upper cover 820 from plain battery 100, this will set forth after a while.Basis fixed projection 754 can comprise first foundation projection 754a, the second basic projection 754b and the 3rd basic projection 754c.First foundation projection 754a can be formed on the edge of the first long side 214 of the most close circuit board 210 of foundation bottom 252, the second basic projection 754b can be formed on the edge of the first short side 212 that is basically parallel to circuit board 210 of foundation bottom 252, and the 3rd basic projection 754c can be formed on the edge of the second long side 215 of the most close circuit board 210 of foundation bottom 252.First, second, and third basic projection 754a, 754b, 754c are engaged in respectively among the first, second, and third basic holddown groove 825a, 825b, 825c of upper cover 820 regularly, to support upper cover 820 opposing external impact.Adopt this configuration, basic fixed projection 754 can prevent effectively that upper cover 820 is because being applied to strong external impact on the battery pack 30 along the crooked or distortion of x axle and y direction of principal axis (among Figure 11 shown in the arrow).
The opposite side of going up along its length that pseudo-corbel back slab 760 is installed to be circuit board 210 links to each other with a corresponding side that goes up along its length of cover plate 121.Pseudo-corbel back slab 760 comprises pseudo-bonding part 261, pseudo-bottom 262, pseudo-coupling part 263 and pseudo-fixed projection 764.
Pseudo-fixed projection 764 is positioned in the edge of pseudo-bottom 262, and along outstanding towards the direction of upper cover 820 from plain battery 100, this will set forth after a while.Pseudo-fixed projection 764 can comprise the first pseudopods 764a, the second pseudopods 764b and the 3rd pseudopods 764c.The first pseudopods 764a can be formed on the edge of the first long side 214 of the most close circuit board 210 of pseudo-bottom 262, the second pseudopods 764b can be formed on the edge of the second short side 213 that is basically parallel to circuit board 210 of pseudo-bottom 262, and the 3rd pseudopods 764c can be formed on the edge of the second long side 215 of the most close circuit board 210 of pseudo-bottom 262.First, second, and third pseudopods 764a, 764b, 764c are engaged in respectively among the first, second, and third pseudo-holddown groove 827a, 827b, 827c of upper cover 820 regularly, to support upper cover 820 opposing external impact.Adopt this configuration, pseudo-fixed projection 764 can prevent effectively that upper cover 820 is because being applied to strong the external impact crooked or distortion along x axle and y direction of principal axis on the battery pack 30.
Referring to Figure 10, Figure 12 and Figure 13, upper cover 820 is coupled to the top of plain battery 100, so that circuit module 700 is covered and is contained in the inner space of this upper cover 820.Upper cover 820 can be made by insulating material.Upper cover 820 can comprise cover plate 321, sidewall 322 and wall extension 323.Upper cover 820 also can comprise therein and is formed the first projection 324 with basic holddown groove 825 and is formed the second projection 326 with pseudo-holddown groove 827.
The first projection 324 comprises basic holddown groove 825, and this basis holddown groove 825 is formed corresponding to the basic fixed projection 754 of basic corbel back slab 750 and is suitable for being coupled to regularly in the basic fixed projection 754 of basic corbel back slab 750.Particularly, basic holddown groove 825 that can comprise first foundation holddown groove 825a, that be arranged in upper cover 820 and second basic holddown groove 825b zone corresponding to the second basic projection 754b in the zone corresponding with first foundation projection 754a that is arranged in upper cover 820 and be arranged in upper cover 820 with the 3rd holddown groove 825c zone corresponding to the 3rd basic projection 754c.
The second projection 326 comprises pseudo-holddown groove 827, and this puppet holddown groove 827 is formed in the zone corresponding to the pseudo-fixed projection 764 of pseudo-corbel back slab 760 of the second projection 326.Pseudo-fixed projection 764 is engaged in the corresponding pseudo-holddown groove 827 regularly at assembly process.Particularly, pseudo-holddown groove 827 that can comprise the first pseudo-holddown groove 827a, that be arranged in upper cover 820 and second pseudo-holddown groove 827b zone corresponding to the second pseudopods 764b in the zone corresponding with the first pseudopods 764a that is arranged in upper cover 820 and be arranged in upper cover 820 with the 3rd pseudo-holddown groove 827c zone corresponding to the 3rd pseudopods 764c.
As mentioned above, in the battery pack 30 according to the embodiment of the invention, first, second, and third basic projection 754a, 754b, 754c are coupled to respectively among first, second, and third basic holddown groove 825a, 825b, the 825c regularly, first, second, and third pseudopods 764a, 764b, 764c are coupled to respectively among first, second, and third pseudo-holddown groove 827a, 827b, the 827c regularly, to stablize and to support equably upper cover 820 and resist external impact.Therefore, compare with battery pack 20, the upper cover 820 that can more effectively prevent battery pack 30 because of strong external impact along the x axle with the y direction of principal axis is crooked or distortion.
Obviously find out from the above description, in battery pack according to the present invention, the fixed projection that is formed in the circuit module that is coupled to plain battery is engaged in the corresponding holddown groove that is formed in the upper cover regularly, effectively preventing upper cover crooked or distortion because of external impact, thereby prevent that upper cover from separating with plain battery.
Although illustrate and described embodiments of the invention, it will be appreciated by those skilled in the art that in the situation that does not break away from the theory of the present invention that limited by claim and equivalent thereof and spirit, can make a change the present embodiment.

Claims (24)

1. battery pack comprises:
Plain battery comprises cover plate and the electrode terminal that insulate with described cover plate;
Circuit module, comprise the circuit board that is electrically connected to described plain battery, and comprising the basic corbel back slab that is attached to described circuit board and the basic fixed projection that extends from described basic corbel back slab, described basic corbel back slab is made of metal and is further connected to the first side of described cover plate; With
Be suitable for covering the upper cover of described circuit module, this upper cover comprises and is suitable for the basic holddown groove that cooperates with described basic fixed projection.
2. battery pack as claimed in claim 1, wherein said circuit module further comprises the pseudo-corbel back slab that is coupled to described circuit board, this puppet corbel back slab has towards the outstanding pseudo-fixed projection of described upper cover;
Wherein said upper cover further comprises and is suitable for the pseudo-holddown groove that cooperates with described pseudo-fixed projection.
3. battery pack as claimed in claim 2, wherein said pseudo-corbel back slab is connected to the second side of described cover plate.
4. battery pack as claimed in claim 1, wherein said circuit board have the first short side, second short side, first long side and with the described first long side relative second long side relative with the described first short side.
5. battery pack as claimed in claim 2, wherein said circuit board have the first short side, second short side, first long side and with the described first long side relative second long side relative with the described first short side.
6. battery pack as claimed in claim 4, wherein said basic corbel back slab further comprise described the first short side that is coupled to described circuit board basic bonding part, be coupled to the foundation bottom and the basic coupling part that described basic bonding part is linked to each other with described foundation bottom of described cover plate; And
Wherein said basic fixed projection is positioned at the edge of described foundation bottom.
7. battery pack as claimed in claim 5, wherein said pseudo-corbel back slab further comprise described the second short side that is coupled to described circuit board pseudo-bonding part, be coupled to the pseudo-bottom of described cover plate and the pseudo-coupling part that described pseudo-bonding part is linked to each other with described pseudo-bottom; And
Wherein said pseudo-fixed projection is positioned at the edge of described pseudo-bottom.
8. battery pack as claimed in claim 4, wherein said basic fixed projection are positioned at the edge near the described first long side of described circuit board of described basic corbel back slab.
9. battery pack as claimed in claim 5, wherein said pseudo-fixed projection are positioned at the edge near the described second long side of described circuit board of described pseudo-corbel back slab.
10. battery pack as claimed in claim 4, wherein said basic fixed projection comprises the first foundation projection near the edge of the described first long side of described circuit board that is positioned at described basic corbel back slab, and the second basic projection near the edge of the described first short side of described circuit board that is positioned at described basic corbel back slab.
11. comprising, battery pack as claimed in claim 10, wherein said basic holddown groove be suitable for the second basic holddown groove of admitting the first foundation holddown groove of described first foundation projection and being suitable for cooperating with the described second basic projection.
12. battery pack as claimed in claim 5, wherein said pseudo-fixed projection comprises the first pseudopods near the edge of the described first long side of described circuit board that is positioned at described pseudo-corbel back slab, and the second pseudopods that is positioned at the edge parallel with the described second short side of described circuit board of described pseudo-corbel back slab.
13. comprising, battery pack as claimed in claim 12, wherein said pseudo-holddown groove be suitable for the second pseudo-holddown groove of admitting the first pseudo-holddown groove of described the first pseudopods and being suitable for cooperating with described the second pseudopods.
14. battery pack as claimed in claim 5, wherein said pseudo-fixed projection comprises the first pseudopods near the edge of the described second long side of described circuit board that is positioned at described pseudo-corbel back slab, and the second pseudopods that is positioned at the edge parallel with the described second short side of described circuit board of described pseudo-corbel back slab.
15. battery pack as claimed in claim 4, wherein said basic fixed projection comprises: be positioned at the first foundation projection near the edge of the described first long side of described circuit board of described basic corbel back slab, the second basic projection of the edge parallel with the described first short side of described circuit board that is positioned at described basic corbel back slab and the 3rd basic projection that described second of described circuit board is grown the edge of side that approaches that is positioned at described basic corbel back slab.
16. battery pack as claimed in claim 15, wherein said basic holddown groove comprises: be suitable for admitting the first foundation holddown groove of described first foundation projection, the 3rd holddown groove that is suitable for the second basic holddown groove that cooperates with the described second basic projection and is suitable for cooperating with the described the 3rd basic projection.
17. battery pack as claimed in claim 5, wherein said pseudo-fixed projection comprises: be positioned at first pseudopods near the edge of the described first long side of described circuit board of described pseudo-corbel back slab, the second pseudopods of the edge parallel with the described second short side of described circuit board that is positioned at described pseudo-corbel back slab and the 3rd pseudopods that described second of described circuit board is grown the edge of side that approaches that is positioned at described pseudo-corbel back slab.
18. battery pack as claimed in claim 17, wherein said pseudo-holddown groove comprises: be suitable for admitting the first pseudo-holddown groove of described the first pseudopods, the 3rd pseudo-holddown groove that is suitable for the second pseudo-holddown groove that cooperates with described the second pseudopods and is suitable for cooperating with described the 3rd pseudopods.
19. battery pack as claimed in claim 5, wherein said upper cover comprises:
Cover plate, the sidewall that extends towards described circuit module from the edge of described cover plate;
From the wall extension of described sidewall towards described circuit module extension;
The first projection, its first side from the basal surface of described cover plate is outstanding towards described circuit module, and comprises that described basic holddown groove, described basic fixed projection are coupled in this basis holddown groove; With
The second projection, its second side from the basal surface of described cover plate is outstanding towards described circuit module, and comprises described pseudo-holddown groove, and described pseudo-fixed projection is coupled in this puppet holddown groove.
20. battery pack as claimed in claim 1, wherein said circuit board is flexible printed circuit board.
21. battery pack as claimed in claim 1, wherein said circuit module comprises the circuit devcie on the upper surface that is positioned at described circuit board.
22. battery pack as claimed in claim 1, wherein said circuit board contacts with described cover plate at the lower surface place of described cover plate.
23. battery pack as claimed in claim 1, wherein said circuit board has terminal hole, and this terminal hole is corresponding to described electrode terminal and be suitable for admitting described electrode terminal.
24. comprising, battery pack as claimed in claim 1, wherein said circuit module be positioned at the PTC device that is electrically connected on the described circuit board, with described electrode terminal.
CN2009102580405A 2008-12-16 2009-12-16 Battery pack Expired - Fee Related CN101752604B (en)

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JP5090422B2 (en) 2012-12-05
EP2200108A1 (en) 2010-06-23
US20100151281A1 (en) 2010-06-17
KR101030856B1 (en) 2011-04-22
US8216706B2 (en) 2012-07-10
EP2200108B1 (en) 2013-02-27
CN101752604A (en) 2010-06-23
JP2010147020A (en) 2010-07-01
KR20100069159A (en) 2010-06-24

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